P1128 DODGE Possible Causes
- Fuel delivery system
- Manifold Absolute Pressure (MAP) sensor or wiring connectors
- O2 sensor wiring or connectors
- Engine mechanical system
- Faulty Powertrain Control Module (PCM)
How to Fix P1128 DODGE Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What Does It Mean?
Start by checking the battery load and terminals and the alternator charge. If the battery and alternator are in good condition, the totally integrated power module may be damaged.
Possible Symptoms
- Check engine light on (or service engine soon warning light)
- Engine hesitation
- Engine stalling
- Engine misfire
P1128 DODGE Meaning
The Powertrain Control Module (PCM) detects a condition where the vehicle has remained in open loop fuel control, from a start-up condition, longer than a calibrated duration, when conditions would otherwise have closed loop operation.